Home / 320,682.56-442,511.78-217,106.05

Finding the Fourth Proportional to 320,682.56, 442,511.78 and 217,106.05

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Solution

The fourth proportional to 320,682.56, 442,511.78 and 217,106.05 is: 299,585.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,682.56 : 442,511.78 = 217,106.05 : x
  2. Step 2: Convert to fraction form
    320,682.56/442,511.78 = 217,106.05/x
  3. Step 3: Cross multiply
    320,682.56x = 442,511.78 × 217,106.05
  4. Step 4: Simplify right side
    320,682.56x = 96,071,983,859.44
  5. Step 5: Solve for x
    x = 96,071,983,859.44/320,682.56
  6. Step 6: Final answer
    x = 299,585.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.